JDK 9 RFR of JDK-8146587: Mark tools/pack200/Pack200Test.java as intermittently failing

[Amy Lu]

Test tools/pack200/Pack200Test.java is known to fail intermittently, 
this patch is to mark the test accordingly with keyword 'intermittent'.

bug: https://bugs.openjdk.java.net/browse/JDK-8146587
webrev: http://cr.openjdk.java.net/~amlu/8146587/webrev.00/

Thanks,
Amy

--- old/test/tools/pack200/Pack200Test.java	2016-01-07 11:07:47.000000000 +0800
+++ new/test/tools/pack200/Pack200Test.java	2016-01-07 11:07:47.000000000 +0800
@@ -1,5 +1,5 @@
  /*
- * Copyright (c) 2007, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2007, 2016, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
@@ -31,6 +31,7 @@
   /*
    * @test
    * @bug 6521334 6712743 8007902
+  * @key intermittent
    * @summary check for memory leaks, test general packer/unpacker functionality\
    *          using native and java unpackers
    * @compile -XDignore.symbol.file Utils.java Pack200Test.java